saving multiple outputs in different files

I have a program which generates several plots.. No开发者_运维百科w I need to save each plot in a different file like say: file1, file2, file2,...

P.S: I am using Gnuplot to save and generate the plots:

g('set output \"test.ps\"')

How do I generate these names?

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You need to use string formatting. The simplest option is to use

g('set output \"test%d.ps\"' % n)`

and make n increase.